No, I don't think it will be a diesel and will be horrified if it is. And They always offered two engine options in the GT, albeit both V8, so I think there will be a choice again
I won't buy the diesel myself but don't care if they offer it if it allows them justify the investment and let it happen. Are you all seriously telling me that you would not buy a beautiful V6/8 petrol Maserati coupe just because someone else can buy it with a Diesel engine. It would not put me off buying a Ghibli S if I wanted one.